ISL OpenIR
Supercooling Suppression and Thermal Conductivity Enhancement of Na2HPO4 center dot 12H(2)O/Expanded Vermiculite Form-Stable Composite Phase Change Materials with Alumina for Heat Storage
Deng, Yong1; Li, Jinhong1; Deng, Yanxi1; Nian, Hongen2,3; Jiang, Hua4
2018-05-01
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume6Issue:5Pages:6792-6801
SubtypeArticle
AbstractIn the heat storage applications, Na2HPO4 center dot 12H(2)O phase change materials (PCM) show significant defects including form instability, high supercooling degree and low thermal conductivity. Aiming at these drawbacks, the Na2HPO4 center dot 12H(2)O-alumina/eipanded vermiculite (EVM) form-stable composite phase change materials (NEA fs-CPCMs) with supercooling suppression and heat transfer enhancement were prepared. The favorable wettability of NEA fs-CPCMs was beneficial to their form-stabilization (encapsulation mass fractions above 59.7 wt %). The supercooling degree of NE5.3 was reduced to 1.4 degrees C after adding 5.3 wt % alumina as the nucleating agent (decreased by 90%). The surface effects of EVM and alumina and high wettability of PCM-alumina were responsible for the supercooling suppression of PCM. Large specific surface area of EVM could provide nucleation sites for crystallization of PCM. The surface electronegativity of alumina increased the affinity ability and diffusion rate of ions, thus effectively increasing the probability of nucleation. The heat transfer of NEA fs-CPCMs was significantly enhanced by the alumina as the thermal conductivity enhancement filler. The thermal conductivity of NE5.3 reached 0.418 W/(m K). Thermal energy storage behavior analysis indicated that the NEA fs-CPCMs showed large heat storage capacity (melting process: 97-151 J/g; solidification process: 60-89 J/g). The thermal reliability of NEA fs-CPCMs was effectively improved by coated paraffin.
KeywordPhase Change Material Expanded Vermiculite Alumina Supercooling Suppression Thermal Conductivity Enhancement
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS KeywordCALCIUM-CHLORIDE HEXAHYDRATE ; BUILDING ENERGY-CONSERVATION ; GRAPHITE COMPOSITE ; ACETATE TRIHYDRATE ; CHANGE PERFORMANCE ; PERLITE COMPOSITE ; BEHAVIOR ; SYSTEMS ; STABILIZATION ; NANOPARTICLES
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Engineering
WOS SubjectChemistry, Multidisciplinary ; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY ; Engineering, Chemical
WOS IDWOS:000431927500121
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6715
Collection中国科学院青海盐湖研究所
Corresponding AuthorLi, Jinhong; Deng, Yanxi
Affiliation1.China Univ Geosci, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China
3.Key Lab Salt Lake Resources Chem Qinghai Prov, Xining 810008, Peoples R China
4.Qinghai Univ, Xining 810016, Peoples R China
Recommended Citation
GB/T 7714
Deng, Yong,Li, Jinhong,Deng, Yanxi,et al. Supercooling Suppression and Thermal Conductivity Enhancement of Na2HPO4 center dot 12H(2)O/Expanded Vermiculite Form-Stable Composite Phase Change Materials with Alumina for Heat Storage[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2018,6(5):6792-6801.
APA Deng, Yong,Li, Jinhong,Deng, Yanxi,Nian, Hongen,&Jiang, Hua.(2018).Supercooling Suppression and Thermal Conductivity Enhancement of Na2HPO4 center dot 12H(2)O/Expanded Vermiculite Form-Stable Composite Phase Change Materials with Alumina for Heat Storage.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,6(5),6792-6801.
MLA Deng, Yong,et al."Supercooling Suppression and Thermal Conductivity Enhancement of Na2HPO4 center dot 12H(2)O/Expanded Vermiculite Form-Stable Composite Phase Change Materials with Alumina for Heat Storage".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 6.5(2018):6792-6801.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Deng, Yong]'s Articles
[Li, Jinhong]'s Articles
[Deng, Yanxi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Deng, Yong]'s Articles
[Li, Jinhong]'s Articles
[Deng, Yanxi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Deng, Yong]'s Articles
[Li, Jinhong]'s Articles
[Deng, Yanxi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.